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SlowMist has yet to confirm crypto theft from iPhone Safari attack

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Cointelegraph by Helen Partz

September 26, 2026
SlowMist has yet to confirm crypto theft from iPhone Safari attack

Security researchers at SlowMist are investigating reports of a Safari-based iPhone exploit targeting crypto assets. While warnings about broad iOS vulnerability ranges have circulated, the firm has not confirmed any actual theft cases.

Investigating the Safari-Based Crypto Threat

Recent security alerts have sparked significant concern within the cryptocurrency community regarding a purported Safari-based attack targeting iPhone users. These warnings suggest that malicious web pages could potentially expose sensitive information, such as private keys and seed phrases, leading to unauthorized asset depletion. However, the cybersecurity firm SlowMist has clarified that while technical investigations are ongoing, there is currently no verified evidence of actual cryptocurrency theft resulting from this specific attack vector.

Analyzing the Technical Scope

The narrative surrounding this threat has been characterized by broad, and perhaps hyperbolic, claims regarding the range of affected iOS versions. Initial reports suggested a massive window of vulnerability, spanning from iOS 13 all the way through iOS 26.5. SlowMist has moved to temper these claims, noting that their strongest technical evidence is isolated to the iOS 18.4 through 18.6.2 range. They have explicitly advised that the wider range of versions cited in public discourse should be viewed with skepticism until further forensic data is produced.

The Challenge of Exploit Verification

A critical component of this investigation is the reliance on previously patched flaws. The analyzed Safari sample appears to leverage known vulnerabilities rather than 'zero-day' exploits, which are typically more dangerous due to their lack of existing defenses. The fact that the exploit's effectiveness on newer versions, such as iOS 26.5, remains unverified highlights the gap between theoretical vulnerability and practical risk. This distinction is vital for users who might otherwise be misled by alarmist headlines.

Broader Implications for Mobile Security

This incident underscores the persistent tension between mobile browser security and the safety of digital assets. Mobile devices have become the primary interface for many crypto users, making them a high-value target for threat actors. When security researchers issue warnings, they often prioritize caution, yet this can inadvertently lead to panic. The situation serves as a reminder of the importance of maintaining up-to-date software, as even if this specific threat remains unconfirmed, the underlying vulnerabilities it attempts to exploit are often the result of outdated system firmware.

Navigating Future Risks

Looking ahead, the intersection of browser-based exploits and decentralized finance (DeFi) is expected to become an increasingly active front in cybersecurity. As browsers like Safari continue to integrate complex features, the attack surface for malicious actors expands. For the average user, the best defense remains rigorous adherence to security hygiene, such as using hardware wallets for significant storage and avoiding interaction with suspicious web links, regardless of the device or iOS version they are running.

Conclusion

In summary, while the security warnings regarding Safari-based attacks on iPhones have generated significant noise, the lack of confirmed theft indicates that the immediate risk may be less widespread than public sentiment suggests. SlowMist's measured approach provides a necessary reality check against the potential for misinformation. Users are encouraged to continue updating their devices as a standard security practice, while remaining critical of unverified reports regarding the scope of specific software vulnerabilities.

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